What is UPS? What's the impact?

UPS means "uninterruptible power supply" in Chinese, which is the English abbreviation of "uninterruptible power supply". It can ensure that the computer system will continue to work for a period of time after power failure, so that users can save the disk urgently, so that you will not be affected by power failure or lose data. In computer systems and network applications, it mainly plays two roles: one is emergency use to prevent sudden power failure from affecting normal work and causing damage to computers; The second is to eliminate "power pollution" such as power surge, instantaneous high voltage, instantaneous low voltage, wire noise and frequency offset, improve the quality of power supply and provide high-quality power for computer systems.

UPS can be divided into online and offline. Make sure you have one, and you can debug it in the control panel. At present, mainstream UPS manufacturers include APC and Sander, which provide various levels of UPS to meet the needs of different user groups.

From the basic application principle, UPS is a kind of power protection equipment with energy storage device and inverter as main components and stable voltage and frequency output. It is mainly composed of rectifier, storage battery, inverter and static switch.

Rectifier: Rectifier is a rectifying device, which is simply a device that converts alternating current into direct current (DC). It has two main functions: first, it converts alternating current (AC) into direct current (DC) and provides it to the load or inverter after filtering; Second, provide charging voltage for the battery. Therefore, it also plays the role of charger;

Battery: The battery is a device used by UPS to store electric energy. It is composed of several batteries connected in series, and its capacity determines the time of maintaining discharge (power supply). Its main functions are:

1. When the commercial power is normal, the electric energy is converted into chemical energy and stored in the battery.

2. When the commercial power fails, the chemical energy is converted into electrical energy and provided to the inverter or load;

Inverter: Generally speaking, an inverter is a device that converts direct current (DC) into alternating current (AC). It consists of inverter bridge, control logic and filter circuit.

Static switch: Static switch, also known as static switch, is a contactless switch. It is an AC switch composed of two silicon controlled rectifiers in reverse parallel, and its closing and opening are controlled by a logic controller. There are two types: conversion type and parallel type. The transfer switch is mainly used in two-way power supply system, and its function is to realize automatic switching from one way to the other. The parallel switch is mainly used to connect the inverter with the mains or multiple inverters in parallel.